GCSE worksheet using particle pictures to explain changes in rates

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Topic
Outcomes
Collision theory
GCSE
Level
1. To draw particle pictures to explain why changing the
temperature, pressure and concentration will change the rate
of a reaction.
Collision theory and particle pictures
Using your understanding of rates of reaction can you explain the following?
1. Why does increasing the temperature of a reaction increases the rate of
reaction?
2. Why does adding a catalyst increase the rate of reaction?
3. Why does increasing the concentration of a reactant increases the rate of
a reaction?
4. Why does hitting your hand on the desk does not result in a reaction,
despite particles colliding?
Progress: have a look at other activities that get students to understand rates of
reaction
http://www.thescienceteacher.co.uk/rates-of-reaction/
www.thescienceteacher.co.uk | resources for science teachers who like to think
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